@book { UrsachengewaltfrmigerKonflikteinderGolfregion,
    title = "Ursachen gewaltförmiger Konflikte in der Golfregion",
    subtitle = "Internationale und zwischenstaatliche Faktoren",
    author = "Henner {Fürtig} and Rolf {Müller-Syring}",
    year = "1993",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1113915"
}